Precautions

It is very important that your doctor check you closely while you are receiving this medicine to make sure it is working properly. Blood tests will be needed to check for unwanted effects.

This medicine may cause serious allergic reactions, including anaphylaxis. Anaphylaxis can be life-threatening and requires immediate medical attention. Tell your doctor or nurse right away if you have a rash, itching skin, difficulty with swallowing, dizziness, a fast heartbeat, lightheadedness or fainting, restlessness, trouble breathing, swelling in your face, hands, tongue, or throat, or chest pain after you receive the medicine.

This medicine may increase your chance of having blood clotting problems. Tell your doctor right away if you have a sudden or severe headache, problems with vision or speech, chest pain, shortness of breath, or numbness or weakness while you are receiving this medicine.

This medicine is made from donated human blood. Some human blood products have transmitted certain viruses to people who have received them, although the risk is low. Human donors and donated blood are both tested for viruses to keep the transmission risk low. Talk with your doctor about this risk if you are concerned.